沙濾層 的英文怎麼說
中文拼音 [shālǜcéng]
沙濾層
英文
sand blanket-
In drainage of agricultural lands, a filter or gravel envelope is used to prevent the entrance of fine sand and silt into the drains.
在農田排水中常常採用礫石或過濾層來防止粉細砂和泥沙進入排水溝。At 12 week after inoculation, lymphoid follicles were especially conspicuous in the submucosa, and they were also found in the deep portion of the mucosa. at 24 week after inoculation infected mongolian gerbils could be found gastric ulcer, which often located near the transitional zone and their depth reached to the muscularis propria. in our study, we could not found intestinal metaplasis, atypical hyperplasia and adenocarcinoma
Pylori灌喂之後各個時期的蒙古沙土鼠的胃組織學研究之後發現，在感染的8周即可見到慢性炎癥性病變，而12周粘膜層和粘膜下層出現淋巴濾泡， 24周胃竇部可見到胃潰瘍，但住我們的實驗中並未發現有文獻報道的腸化生、胃腺癌等進一步的病變。If circumstances permit, use of layered multi - sand filter comprising both coarse sand and fine sand as filter materials fitted with automatic backwash self - cleansing device is desirable
如情況許可，宜使用包括粗沙和幼沙作為過濾物料的層沙過濾器，而過濾器應設有自動反沖的潔凈裝置。23 if circumstances permit, use of layered multi - sand filter comprising both coarse sand and fine sand as filter materials fitted with automatic backwash self - cleansing device is desirable
23如情況許可，宜使用包括粗沙和幼沙作為過濾物料的層沙過濾器，而過濾器應設有自動反沖的潔凈裝置。Such soils usually form in areas of heavy rainfall, which causes leaching of lime from the surface layers, or over acid substrata such as granite or sand
通常是由於大雨過濾掉了表層土壤的石灰或者是由於覆蓋諸如花崗巖或者沙土這類的酸性下層土壤造成的。Constructing a forty - meter pipeline to carry the water, erecting barrels to filter dirty water, and using sand and stones to pave the surface and build a safe sidewalk
建立40米的輸送管來運送水流，以鐵桶過濾污水，並用沙土與石頭鋪蓋在表層，修建一條安全的走道。分享友人